Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate this is a non-read-only, non-idempotent, non-destructive operation. The description adds the useful context that the folder is created 'on the remote host' and emphasizes it is 'new,' implying no overwrite. However, it does not disclose failure behavior, parent-directory requirements, permissions, or effects if the folder already exists.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.